210012451 has 4 divisors (see below), whose sum is σ = 229104504. Its totient is φ = 190920400.

The previous prime is 210012443. The next prime is 210012457. The reversal of 210012451 is 154210012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 210012451 - 2³ = 210012443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210012457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9546010 + ... + 9546031.

It is an arithmetic number, because the mean of its divisors is an integer number (57276126).

Almost surely, 2^210012451 is an apocalyptic number.

210012451 is a deficient number, since it is larger than the sum of its proper divisors (19092053).

210012451 is a wasteful number, since it uses less digits than its factorization.

210012451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19092052.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 210012451 is about 14491.8063401358. The cubic root of 210012451 is about 594.4039423096.

Adding to 210012451 its reverse (154210012), we get a palindrome (364222463).

The spelling of 210012451 in words is "two hundred ten million, twelve thousand, four hundred fifty-one".